Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Closing all forms except the main

Posted on 2006-10-21
7
Medium Priority
?
177 Views
Last Modified: 2010-04-16
Hi,
I have a application there from a main form several other forms can be created ( and hided ) by user and  from them other forms can be created etc
To start a new calculation ( a new case) with the program I have to be sure that all forms (visibled and hided) are cleaned from the memory.
Alternative is, of course, to close, the main form ( and the program) and restart it again.  
How I can cleaned all this forms except the main one (to avoid restarting of the program)?
I use VS 2005

Thanks
Ted
0
Comment
Question by:teja21
  • 4
  • 3
7 Comments
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 17780622
"I use VS 2005"

Use the Application.OpenForms collection...

(assuming this code is run from the "main" form itself)

        private void button1_Click(object sender, EventArgs e)
        {
            ArrayList ToBeClosed = new ArrayList();
            foreach (Form frm in Application.OpenForms)
                if (frm != this)
                    ToBeClosed.Add(frm);
            foreach (Form frm in ToBeClosed)
                frm.Close();
        }
0
 

Author Comment

by:teja21
ID: 17781067
It's working fine (the forms disappeared) but the forms are still somewhere in the memory:   when I recalculated the program with another case
, the data file is changed (which  put data into  the new forms) but the forms is started with the old data !
//Ted

PS. I start the forms with e.g.
  Form11.Owner =this;
  Form11.Show();
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 17781178
You need to create the forms using the "new" keyword:

    Form11 f11 = new Form11();
    f11.Owner = this;
    f11.Show();
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 

Author Comment

by:teja21
ID: 17781226
Yes you  are right (I create the forms by" new"  in the start of the program, but:

why I can show the "old" forms when the "new " are not created - that means that the old ones are still in the memory !
That is not good : user in my application can easy start up 50-100 forms/ per case.
After a couple of cases .. I dont want to keep all that in the computer.
//T
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 17781706
If you are creating new forms each time and data is still there then something else is going on.

Are you loading data into the forms in the load event or anything like that?

Show us more code...
0
 

Author Comment

by:teja21
ID: 17784387
Let me start from the beginning. The "Large" forms are created (by key 'new') on the main form at the program start.
The "small"  forms  are created on the "Large" forms (by 'new') at the forms start.
That means that I have all forms created at the start og the program (right?)

All forms are predefined with local function, parameters, and updated later  by "loading botton" which read a file and  via a funciton call
updates the forms. The external call  like:
int ret10 = formLarge .Pisz(STGi1,ParVmaxS1,.................,stag,van);
                        switch (stag)
                        {
                              case(1):
                                    fL.Owner =this;
                                    fL.Show();
                                    break;  
.                                                                          ...........................................

 // fL = new formLarge();

I relize that have to change creation of the Large form from the main form to somewhere in the "loading botton" before the forms will be updated
with the new data.
Anyway it is still a question what happen with the old forms (from the previous case) .Atrial with your snipett indicate that the form are still in the memory)
Thanks
Ted
0
 
LVL 86

Accepted Solution

by:
Mike Tomlinson earned 500 total points
ID: 17785863
You could try calling Dispose() on each form as well:
 
            ArrayList ToBeClosed = new ArrayList();
            foreach (Form frm in Application.OpenForms)
                if (frm != this)
                    ToBeClosed.Add(frm);
            foreach (Form frm in ToBeClosed)
            {
                frm.Close();
                frm.Dispose();
            }
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In order to hide the "ugly" records selectors (triangles) in the rowheaders, here are some suggestions. Microsoft doesn't have a direct method/property to do it. You can only hide the rowheader column. First solution, the easy way The first sol…
Introduction This article series is supposed to shed some light on the use of IDisposable and objects that inherit from it. In essence, a more apt title for this article would be: using (IDisposable) {}. I’m just not sure how many people would ge…
This lesson discusses how to use a Mainform + Subforms in Microsoft Access to find and enter data for payments on orders. The sample data comes from a custom shop that builds and sells movable storage structures that are delivered to your property. …
With just a little bit of  SQL and VBA, many doors open to cool things like synchronize a list box to display data relevant to other information on a form.  If you have never written code or looked at an SQL statement before, no problem! ...  give i…
Suggested Courses

580 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question